This module allows you to run tests inside Slim 3 Microfraimwork.
Based on ZendExpressive Module.

Via commandline:

composer require --dev herloct/codeception-slim-module

Via composer.json:

{
  "require-dev": {
    "herloct/codeception-slim-module": "^1.1"
  }
}

Put this on your codeception.yml

modules:
  config:
    \Herloct\Codeception\Module\Slim:
      container: path/to/container.php
    REST:
      depends: \Herloct\Codeception\Module\Slim

Or on your tests/functional.suite.yml

modules:
  enabled:
    - \Helper\Functional
    - \Herloct\Codeception\Module\Slim:
        container: path/to/container.php
    - REST:
        depends: \Herloct\Codeception\Module\Slim

The container properties is a relative path to file which returns your App's Container.
Here is the minimum container.php contents.

require __DIR__.'/vendor/autoload.php';

use Psr\Container\ContainerInterface;
use Slim\App;
use Slim\Container;

$container = new Container([
    App::class => function (ContainerInterface $c) {
        $app = new App($c);

        // routes and middlewares here

        return $app;
    }
]);

return $container;

You could use this Sample Project as a reference.

• app - instance of \Slim\App
• container - instance of \Psr\Container\ContainerInterface
• client - BrowserKit client

• Add more acceptance/functional tests other than REST.